Across
1
Measure of matter in an object
3
Our home planet
4
Tectonic landmass section
5
The Red Planet
8
Unit of power
11
Push or pull on an object
Down
2
Icy body with a tail near the sun
3
Blocking of light by a celestial body
4
Glass that splits light into spectrum
6
Form of thermal energy
7
Substance with pH above 7
9
Molten rock beneath Earth surface
10
Gas essential for breathing